Diamond
Carbon (C)
Category
Browse anthropogenic (man made industrial deposit) specimens identified by the Rock Identifier community.
Diamond
Carbon (C)
Diamond
Diamond (pure Carbon, C)
Diamond
Carbon (C)
Rough Diamond
Native Carbon (C)
Opalite
Synthetic Opalised Glass
Opalite
Synthetic glass (SiO2 + metal additions)
Diamond
Native Carbon (C)
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)
Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
Chert Arrowhead
Microcrystalline Quartz (SiO2)
Slag
Anthropogenic Vitreous Silicate / Ferro-silicate Slag
Engineered Quartz Stone
Agglomerated Quartz (SiO2 + Polymer Resin)
Sea Glass
Amorphous silicon dioxide (SiO2) - Man-made glass tumbled by nature
Sandstone
Clastic sedimentary rock (primarily SiO2)
Raw quartz crystal
Quartz (silicon dioxide, SiO₂), likely milky or included quartz
Diamond
Diamond (pure Carbon, C)
Asphalt (Bituminous Concrete)
Asphaltum / Bitumen-Aggregate Matrix
Blue Goldstone
Synthetic Avanturine Glass (or Aventurine Glass)
Diamond
Diamond (pure Carbon, C)
Diamond (in jewelry setting)
Diamond (C - Carbon)
Rough Diamond
Pure Carbon (C)
Cubic Zirconia (Man-made)
Cubic Zirconia (ZrO2) with Enamel and Metal Alloy
Cobalt Blue Slag Glass
Amorphous Silicon Dioxide (anthropogenic) with Cobalt additives
Blue slag glass or dyed glass-like industrial material
Amorphous silicate glass; likely copper-bearing blue slag, but possibly colored man-made glass
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Blue-green chrysocolla rough specimen
Chrysocolla, hydrated copper aluminosilicate; commonly associated with malachite, quartz, and limonite
Diamond
Carbon (C)
Chert (Jasper/Common Chert Pebble)
Microcrystalline Quartz (SiO2)
Diamond
Carbon (C)
Hematite Beads
Hematite (Fe2O3)
Moissanite
Silicon Carbide (SiC)
Chert (Yellow Jasper)
Cryptocrystalline Quartz (SiO2)
Diamond
Native Carbon (C)
Asphalt Chunk
Asphalt concrete
Native Silver
Silver (elemental Ag)
Diamond
Native Carbon (C)
Likely weathered iron-rich rock or slag fragment
Uncertain; possibly limonite/goethite-rich material (FeO(OH)·nH₂O)
Diamond (in Jewelry Setting)
Carbon (C)
Diamond
Carbon (C)
Rough Corundum (Sapphire/Ruby mixture)
Corundum (Aluminum Oxide, Al2O3)
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)